1 files changed, 55 insertions, 0 deletions
diff --git a/deps/npm/lib/doctor/check-files-permission.js b/deps/npm/lib/doctor/check-files-permission.js
new file mode 100644
index 0000000000..ac3bb40bc6
--- /dev/null
+++ b/deps/npm/lib/doctor/check-files-permission.js
@@ -0,0 +1,55 @@
+var fs = require('fs')
+var path = require('path')
+var getUid = require('uid-number')
+var chain = require('slide').chain
+var log = require('npmlog')
+var npm = require('../npm.js')
+var fileCompletion = require('../utils/completion/file-completion.js')
+
+function checkFilesPermission (root, mask, cb) {
+  if (process.platform === 'win32') return cb(null, true)
+  getUid(npm.config.get('user'), npm.config.get('group'), function (e, uid, gid) {
+    if (e) {
+      tracker.finish()
+      tracker.warn('checkFilePermissions', 'Error looking up user and group:', e)
+      return cb(e)
+    }
+    var tracker = log.newItem('checkFilePermissions', 1)
+    tracker.info('checkFilePermissions', 'Building file list of ' + root)
+    fileCompletion(root, '.', Infinity, function (e, files) {
+      if (e) {
+        tracker.warn('checkFilePermissions', 'Error building file list:', e)
+        tracker.finish()
+        return cb(e)
+      }
+      tracker.addWork(files.length)
+      tracker.completeWork(1)
+      chain(files.map(andCheckFile), function (er) {
+        tracker.finish()
+        cb(null, !er)
+      })
+      function andCheckFile (f) {
+        return [checkFile, f]
+      }
+      function checkFile (f, next) {
+        var file = path.join(root, f)
+        tracker.silly('checkFilePermissions', f)
+        fs.stat(file, function (e, stat) {
+          tracker.completeWork(1)
+          if (e) return next(e)
+          if (!stat.isFile()) return next()
+          var mode = stat.mode
+          var isGroup = stat.gid ? stat.gid === gid : true
+          var isUser = stat.uid ? stat.uid === uid : true
+          if ((mode & parseInt('000' + mask, 8))) return next()
+          if ((isGroup && mode & parseInt('00' + mask + '0', 8))) return next()
+          if ((isUser && mode & parseInt('0' + mask + '00', 8))) return next()
+          tracker.error('checkFilePermissions', 'Missing permissions on (' + isGroup + ', ' + isUser + ', ' + mode + ')', file)
+          return next(new Error('Missing permissions for ' + file))
+        })
+      }
+    })
+  })
+}
+
+module.exports = checkFilesPermission